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12168000001 = 17476965083
BaseRepresentation
bin10110101010100010…
…01111001000000001
31011102000020110000201
423111101033020001
5144410002000001
65331230245201
7610351202443
oct132521171001
934360213021
1012168000001
115184578553
122437056801
1311bbbc6701
14836070493
154b33a8501
hex2d544f201

12168000001 has 4 divisors (see below), whose sum is σ = 12174966832. Its totient is φ = 12161033172.

The previous prime is 12167999993. The next prime is 12168000011. The reversal of 12168000001 is 10000086121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10000086121 = 31731546013.

It is a cyclic number.

It is not a de Polignac number, because 12168000001 - 23 = 12167999993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12168000011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3480795 + ... + 3484288.

It is an arithmetic number, because the mean of its divisors is an integer number (3043741708).

Almost surely, 212168000001 is an apocalyptic number.

It is an amenable number.

12168000001 is a deficient number, since it is larger than the sum of its proper divisors (6966831).

12168000001 is an equidigital number, since it uses as much as digits as its factorization.

12168000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6966830.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12168000001 its reverse (10000086121), we get a palindrome (22168086122).

The spelling of 12168000001 in words is "twelve billion, one hundred sixty-eight million, one", and thus it is an aban number.

Divisors: 1 1747 6965083 12168000001